Lock screen frozen or won't unlock

Hi everyone I have been having this happen periodically when I awake the phone the lock screen won't let me unlock it. Unable to hit shutdown to turn the phone off also. No touch on display at all. So I have to do a battery pull then all is fine.

No new apps recently. Its also restarting on its own at least once sometimes twice a day. Another thing that's weird is when I pick the phone up after its been sitting I have full bars for signal then I unlock and it drops to one bar.

This started happening to me a week ago or so. I can however turn the phone off normally and don't have to do a battery pull. I do believe it was from an app update but have no clue which one. Scary for sure when you can't get in. I got my phone on launch day and have never done a battery pull yet.

My girlfriend has this problem and she can't unlock her phone. Downloaded no new apps. I asked her what version Droid she had and the Internets says to go to settings to find out, which she can't because the phone is locked. I told her to send it to Verizon to back up her data and then buy a ****ing iPhone, like I have. LOL Droid eats!